DEEP DRAWING TECHNOLOGY WITH WALL IRONING IN MASS PACKAGING INDUSTRY

Investigation of Manufacturing Processes of the Metallic CNG Pressure Vessels

CNG vessels are used in many vehicles.  Mass production of CNG pressure vessels requires exact understanding of process effective parameters.  In this paper, the numerical analysis has been used to study the manufacturing parameters.  The entire manufacturing processes, including deep drawing, redrawing and ironing, of an aluminum liner sample of CNG pressure vessel (without spinning) have been...

A Theoretical Study of Wall Ironing for Anisotropic Workharden Materials

A Theoretical Study of Wall Ironing for Anisotropic Workharden Materials

Deep Drawing Simulations With Different Polycrystalline Models

The goal of this research is to study the anisotropic material behavior during forming processes, represented by both complex yield loci and kinematic-isotropic hardening models. A first part of this paper describes the main concepts of the ‘Stress-strain interpolation’ model that has been implemented in the non-linear finite element code Lagamine. This model consists of a local description of ...

Ironing out carbon export to the deep ocean.

In PNAS, Lopes et al. (1) present a novel approach to quantifying the efficiency of the biological carbon pump as Earth’s climate warmed from the ice bound glacial episode (26,000–18,000 y before present) to the equable climate of the present interglacial (10,000 y BP until present). The biological carbon pump begins with atmospheric CO2 transformation into chemical energy by marine photosynthe...